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flag Sydney Harbour replaced old moorings with eco-friendly ones to help endangered seagrass regrow, marking a first for the area.

flag In 2026, Sydney Harbour installed 10 eco-friendly moorings at Balmoral Boatshed, replacing traditional chain-and-block systems that damaged seagrass. flag The new design uses helical screw anchors and rope with riser buoys to keep mooring lines off the seabed, allowing endangered Posidonia australis seagrass to regrow. flag Scientists from the Sydney Institute of Marine Science planted seagrass fragments collected from storm-washed beaches, nurtured in a lab, and replanted at high density. flag This marks the first time seagrass has been planted under active moorings in the harbor. flag The project, part of SIMS’s Project Restore and funded by state grants, follows successful plantings at other sites with an 80% survival rate. flag Though each eco-mooring costs about $5,000—more than traditional ones—owners and experts see long-term ecological benefits, despite challenges in regulatory approval for restoration efforts.

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